Enable Ruff PLR (Pylint Refactor) (#13307)

pyproject.toml

@@ -46,6 +46,7 @@ select = [
     "N", # pep8-naming
     "PGH", # pygrep-hooks
     "PLC", # Pylint Convention
+    "PLR", # Pylint Refactor
     "RUF", # Ruff-specific and unused-noqa
     "TRY", # tryceratops
     "UP", # pyupgrade
@@ -142,6 +143,12 @@ ignore = [
     # Used for direct, non-subclass type comparison, for example: `type(val) is str`
     # see https://github.com/astral-sh/ruff/issues/6465
     "E721", # Do not compare types, use `isinstance()`
+    # Leave the size and complexity of tests to human interpretation
+    "PLR09", # Too many ...
+    # Too many magic number "2" that are preferable inline. https://github.com/astral-sh/ruff/issues/10009
+    "PLR2004", # Magic value used in comparison, consider replacing `{value}` with a constant variable
+    # Keep codeflow path separation explicit
+    "PLR5501", # Use `elif` instead of `else` then `if`, to reduce indentation
     # Mostly from scripts and tests, it's ok to have messages passed directly to exceptions
     "TRY003", # Avoid specifying long messages outside the exception class
     # Slower and more verbose https://github.com/astral-sh/ruff/issues/7871

scripts/create_baseline_stubs.py

@@ -18,6 +18,7 @@ import re
 import subprocess
 import sys
 import urllib.parse
+from http import HTTPStatus
 from importlib.metadata import distribution
 
 import aiohttp
@@ -72,7 +73,7 @@ def run_ruff(stub_dir: str) -> None:
 async def get_project_urls_from_pypi(project: str, session: aiohttp.ClientSession) -> dict[str, str]:
     pypi_root = f"https://pypi.org/pypi/{urllib.parse.quote(project)}"
     async with session.get(f"{pypi_root}/json") as response:
-        if response.status != 200:
+        if response.status != HTTPStatus.OK:
             return {}
         j: dict[str, dict[str, dict[str, str]]]
         j = await response.json()
@@ -107,7 +108,7 @@ async def get_upstream_repo_url(project: str) -> str | None:
                 # truncate to https://site.com/user/repo
                 upstream_repo_url = "/".join(url.split("/")[:5])
                 async with session.get(upstream_repo_url) as response:
-                    if response.status == 200:
+                    if response.status == HTTPStatus.OK:
                         return upstream_repo_url
     return None
 

scripts/stubsabot.py

@@ -308,7 +308,7 @@ async def get_github_repo_info(session: aiohttp.ClientSession, stub_info: StubMe
             assert len(Path(url_path).parts) == 2
             github_tags_info_url = f"https://api.github.com/repos/{url_path}/tags"
             async with session.get(github_tags_info_url, headers=get_github_api_headers()) as response:
-                if response.status == 200:
+                if response.status == HTTPStatus.OK:
                     tags: list[dict[str, Any]] = await response.json()
                     assert isinstance(tags, list)
                     return GitHubInfo(repo_path=url_path, tags=tags)

stdlib/asyncio/__init__.pyi

@@ -1,3 +1,5 @@
+# ruff: noqa: PLR5501 # This condition is so big, it's clearer to keep to platform condition in two blocks
+# Can't NOQA on a specific line: https://github.com/plinss/flake8-noqa/issues/22
 import sys
 from collections.abc import Awaitable, Coroutine, Generator
 from typing import Any, TypeVar

stdlib/importlib/readers.pyi

@@ -16,9 +16,9 @@ if sys.version_info >= (3, 10):
     from zipimport import zipimporter
 
 if sys.version_info >= (3, 11):
-    import importlib.resources.abc as abc
+    from importlib.resources import abc
 else:
-    import importlib.abc as abc
+    from importlib import abc
 
 if sys.version_info >= (3, 10):
     if sys.version_info >= (3, 11):

stubs/gevent/gevent/libev/corecext.pyi

@@ -5,9 +5,9 @@ from types import TracebackType
 from typing import Any
 from typing_extensions import ParamSpec
 
-import gevent.libev.watcher as watcher
 from gevent._ffi.loop import _ErrorHandler
 from gevent._types import _Callback
+from gevent.libev import watcher
 
 # this c extension is only available on posix
 if sys.platform != "win32":

stubs/gevent/gevent/libev/corecffi.pyi

@@ -2,8 +2,8 @@ import sys
 from _typeshed import FileDescriptor
 from collections.abc import Sequence
 
-import gevent.libev.watcher as watcher
 from gevent._ffi.loop import AbstractLoop
+from gevent.libev import watcher
 
 def get_version() -> str: ...
 def get_header_version() -> str: ...

stubs/gevent/gevent/libuv/loop.pyi

@@ -2,9 +2,9 @@ import sys
 from _typeshed import FileDescriptor
 from typing import NamedTuple
 
-import gevent.libuv.watcher as watcher
 from gevent._ffi.loop import AbstractLoop
 from gevent._types import _IoWatcher
+from gevent.libuv import watcher
 
 def get_version() -> str: ...
 def get_header_version() -> str: ...